Ionos, a subsidiary of United Internet, enters the MDax index portfolio
It's Bloody Well Obvious: Ionos Steps into the MDAX, Pushing Jenoptik to the SDAX
Got some hot stock news for you! According to the stooshie with Deutsche Börse's index provider Stoxx, United-Internet's brainchild Ionos is gonna be added to the German Mid-Cap Index, MDax. This cloud and web hosting provider has been under the stock exchange's gaze for two and a half years, and it's been riding a bullish share price rally since then. Some chappie, Warburg Pincus, a financial investor, has jumped ship, which increased the free float, a crucial factor for index rules.
As a result, poor old Jenoptik has to take a demotion to the Small Cap Index, SDax. Their market cap has taken a bit of a hit over the past year, dropping around a third. The big changes will happen on June 23. No Dax alterations are planned at the moment.
Now, for those who want the gory details: this is part of the quarterly review for the DAX indices, where they evaluate the free float market cap of companies on the Frankfurt Stock Exchange to figure out which indices they bloody well belong in. Ionos, boasting hefty trading volume in the SDAX index with €188.33 million in May 2025[3], presumably showed some significant growth or trading activity that justified their promotion to the MDAX. On the flip side, Jenoptik, heading to the SDAX, might have experienced a slip in their market cap or failed to meet the criteria for hanging around in the MDAX, resulting in their demotion to the small-cap index[1][2].
These moves mirror the volatile nature of the stock market and the continual evaluation process to make sure every company is correctly indexed based on their market size and revel in or suffer from their performance. It's all done to keep the DAX indices as benchmarks for market performance in tip-top shape.
Ionos' promotion to the MDAX indicates a significant growth or trading activity in the industry, particularly in the finance sector of the business world. Conversely, Jenoptik's demotion to the SDAX may be a result of a potential slip in their market cap or failure to meet the required criteria in the finance and business domain.
